Multicylinder internal-combustion engine.



11. T. BRUNS. MULTICYLINDER INTERNAL COMBUSTION ENGINE. APPLICATION TILED DEC.23, 1909.

1,0Q8,693 Patented Nov. 14,1911.

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UNITED STATES,

PATENT OFFICE.

. EIN'SHTHEODOB -3 b nunnmnnne-yezennnnie;

num'rcvunnnn IN'rEnnnLeomnusrIonENeINn.

Specification of LetteIs Iatent-Q. Patented NOV. 14, 1911. Application filed December 23, 1809. Serial No. 584,589.

German Empire, have invented new and useful Improvements in or Relating to Multi'cylin'der Internal-Combustion Engines,

of which the following is a specification.

This invention relates to an improved -starting or operating device for multi-cylinder internal combustion engines.

The starting or operating device which is illustrated by way of example in the accompanying drawing serves for both starting and reversing.

Figure 1 shows the new device in side elevation, the starting lever occupying its central position, Fig. 2is a detail of the toothed segment, adapted to cooperate with thestarting lever.

The starting or operating device consists of the starting lever a displaeeably mounted on a stud b and prolonged beyond the stud b. The extension presents the form of a rocker or cam. One end of a lever e pivoted on a stud d bears against the rocker 0, while the other end of this lever e is mounted on a rod f which constitutes a link for the fuel pump. In addition tothe lever a, a toothed segment g is rockably mountedon the stud 7). A guide h is provided on the carrier of the segment 9 to support and guide the le-' ver a in its movements between the distrib uting blocks i and The latter inclose each a valve i, k for the control of the usual distributing members (valves) in the.

cylinder cover, the valve stems Z and m respectively being operated by thesegment 9 when moved in either direction by the lever a. The toothed segment g, an underneath view of which is shown in Fig. 2, presents two oppositely directed rows of teeth which meet each other at the middle. These rows of teeth lie in different vertical planes. The starting lever a. is provided with suitable engaging members.

The operation is as follows :When the engine is to be startedthe starting lever a is adjusted on the toothed segment 9. Ad-' justment of the starting "lever on on the toothed segment simultaneously entails displacement of the rocker or cam member 0 and consequently an adjustment of the fuel pump to a given supply. The drawing shows clearly that when the starting lever is at the middle of the toothed segment the end of ithe lever e bearing on the rocker is depressed to its lowest point. If the rocker is rotated ipeculiar curvilinear form the end of the le:

@by adjusted. Y V v v The lever is adjusted on 'the t0othed segment in such 'a mannerthat by means'of the {rocker the fuel pump is caused to supply the gnecessary quantity of fuel for the desired power. The lever is then pushed toward 'the side on which it has been set over. Any pressure exerted on the lever must however simultaneously act upon the freely rocking toothed segmentg in engagement with the lever. Owing to the shock imparted thereby to the toothed segment the latter actuates the distributing members in the distributing 'block, thereby controlling the supply ofcoinpressed air to .the separate cylinders and starting the engine. i

. Assumingth'atI the engine is running'forward and that it is desired to reverse it; the

position; that is to say at' the stop posithe engine comes to rest. The lever is then brought to the other side of the toothed segfuel is regulated. A blow against the lever in the direction in which the lever has been setover causes the movement transmitted to the toothed segment by the blow against the lever to actuate the distributing bldck for reversed running of the engine. Startingor reversing of the engine may also be effected before the admission or regulation of the fuel supply in the middle position of the starting lever or indeed from any other position. In this case, however, immediately after the starting or reversal the fuel pump must be adjusted. The .toothed seg ment may also be immovably fixed. In this case-the distributing blocks are operated by the starting .lever directly.

Having thus described my invention, I "declare that what I claim as new and desire to secure by'Letters Patent is z- 1. In multi-cylinder internal combustion engines, the combination with separate distributing valves for controlling the composes, and fuel supply means, of a slngle lever, a rocking member connected therewith means, an actuating member adapted to be gin one. direct-ion or the other, owing 'to its ver e will be lifted and the fuel pump therementto' such an extent that the supply of a and adapted to control the said fuel supply starting lever is first of, all set in the middle .tion. This cuts off the supply of fuel and a pressed air for starting and reversing pur- I coufpled with the said lever at an desired pressed airnfor starting and reversing puroses, andgftlel supply means of a single ever, a rocking member conflected therewith and adapted to control the: said fuel supply means, and a toothed segment adapt-' ed to be coupled with said lever at any desired point of its range of movement and adapted to operate said distributing valves when coupled with said lever. 3. In multi-eylinder internal combustion engines the combination with separate distri uting valves for controlling the compressed air for starting and reversing puroses, and fuel supply means, of a single ever, a rocking member formed integral therewith and adapted to control the said fuel supply means, and a connecting member adapted to rock about the fulcrum of said lever and to be coupled therewith at any desired point of its range of movement,

and to o erate said distributing valves, whencoup ed with said lever.

4. In multi-cylinder internal combustion engines, the combination with separate dismeans, and a toothed se ment, adapte tributing valves for controlling the admission of compressed air for starting and reversin purposes, and fuel supply means, of a sing e lever, a rocking member 'extendin from said lever beyond its fulcrum an adapted to control the said fuel su ply to rock about the fulcrum 0 said lever and to be coupled therewith, so as to 0 rate said distributing valves when couple with said lever.

5. In multi-cylinder internal combustion engines, the combination with separate distributing valves for controlling the admission of compressed air for starting .and reversing purposes, andfuel supply means, of a single lever, a rocker inte a1 therewith and adapted to control sai fuel supply means, and an independent actuating member comprising a toothed segment adapted to rock about the fulcrum of said lever and to be coupled therewith, so as to operate said distributing valves when coupled with said lever.

In testimonywhereof I have signed my name to this specification in the presence of two subscribing witnesses.

HANS THEODOR BRUNS.

Witnesses:

BEBNHARD GRAn'rz, CARL GAnz, 

